10211212102111 has 2 divisors, whose sum is σ = 10211212102112. Its totient is φ = 10211212102110.

The previous prime is 10211212102109. The next prime is 10211212102159. The reversal of 10211212102111 is 11120121211201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211212102111 - 2¹ = 10211212102109 is a prime.

Together with 10211212102109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211212102181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105606051055 + 5105606051056.

It is an arithmetic number, because the mean of its divisors is an integer number (5105606051056).

Almost surely, 2^{10211212102111} is an apocalyptic number.

10211212102111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211212102111 is an equidigital number, since it uses as much as digits as its factorization.

10211212102111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 10211212102111 its reverse (11120121211201), we get a palindrome (21331333313312).

The spelling of 10211212102111 in words is "ten trillion, two hundred eleven billion, two hundred twelve million, one hundred two thousand, one hundred eleven".